Abstract

C llH22 N 30 + . C2H302, orthorhombic,
P2~2~2~, a = 5.511(2), b = 14.588(4), c =
21.109 (4)A, Z = 4. The structure has been solved
using MULTAN and refined to R = 0.079 for 993
observed reflections. The fully extended lysine side
chain in the molecule is staggered between the
main-chain amino and carbonyl groups. The dipeptide
molecules in the crystal structure are arranged in
twofold helices centred on 21 screw axes. These helices
are interconnected through interactions involving the
acetate and the side-chain amino groups. Each acetate
group bridges two adjacent side-chain amino groups,
related by an a translation, giving rise to an infinitely
long chain of alternating negatively charged carboxylate
and positively charged amino groups.

Item Type:

Journal Article

Additional Information:

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